Changes in large wine measures
due to imperial measure

tun

pipe or butt

2

firkin or puncheon or tertian

1½

3

hogshead

1¹/₃

2

4

tierce

1½

2

3

6

barrel

1¹/₃

2

2²/₃

4

8

rundlet

1¾

2¹/₃

3¹/₃

4²/₃

7

14

wine gallon

18

31.5

42

63

84

126

252

imperial gallons 1824-

15

26¼

35

52.5

70

105

210

liters (after 1824)

68.19

119.3

159.1

238.7

318.2

477.3

954.7